CN103025636B - Sheet material conveyor and the image processing system possessing this sheet material conveyor - Google Patents

Sheet material conveyor and the image processing system possessing this sheet material conveyor Download PDF

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Publication number
CN103025636B
CN103025636B CN201180038780.3A CN201180038780A CN103025636B CN 103025636 B CN103025636 B CN 103025636B CN 201180038780 A CN201180038780 A CN 201180038780A CN 103025636 B CN103025636 B CN 103025636B
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China
Prior art keywords
roller
sheet material
reinforcement
conveying
conveying roller
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CN201180038780.3A
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Chinese (zh)
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CN103025636A (en
Inventor
木村正治
青木浩司
小林祥志
桂典史
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Sharp Corp
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Sharp Corp
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Priority to CN201510975014.XA priority Critical patent/CN105540317B/en
Publication of CN103025636A publication Critical patent/CN103025636A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/70—Article bending or stiffening arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • B65H29/14—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers and introducing into a pile
    • B65H29/145—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers and introducing into a pile the pile being formed between the two, or between the two sets of, tapes or bands or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/20—Delivering or advancing articles from machines; Advancing articles to or into piles by contact with rotating friction members, e.g. rollers, brushes, or cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/068—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between one or more rollers or balls and stationary pressing, supporting or guiding elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/133—Limited number of active elements on common axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/06—Office-type machines, e.g. photocopiers

Abstract

Possesses multiple first conveying roller (31, ) and multiple second conveying roller (32, ) sheet material conveyor (30), possess and the first and second conveying rollers (31, ), (32, ) at least one party's conveying roller (32, ) be disposed in above coaxial and have than conveying roller (32, ) the reinforcement roller (34) of the large diameter of diameter, strengthen roller (34), comprise the first reinforcement roller (34a sheet material (P) being given to carrying capacity, ) and than first, roller (34a is strengthened to the carrying capacity of sheet material (P), ) to the carrying capacity of sheet material (P) little second strengthen roller (34b, ).

Description

Sheet material conveyor and the image processing system possessing this sheet material conveyor
Technical field
The present invention relates to the sheet material conveyor and image processing system that can be applied to the image processing systems such as chopping machine, duplicator, compounding machine.
Background technology
In the sheet material conveyor that image processing system possesses, in order to when the sheet material such as original copy, recording paper terminating image reading process or the laggard row relax of image formation processing with this image processing system is transported to discharge tray, this sheet-stacking (stack) property is transported to discharge tray well, requires that stow is in discharge tray under the state of sheet material alignment.
Fig. 9 is the instruction diagram of an example of the sheet material conveyor A1 in the past reduced for illustration of stackability.Fig. 9 (a) be from conveying roller (B1 ...), (B2 ...) axis direction X see the summary lateral view of the discharge state of the sheet material P being transported to discharge tray B4.Fig. 9 (b) is the summary lateral view of the feed status of sheet material P viewed from the throughput direction Y of sheet material P.
Sheet material conveyor A1 shown in Fig. 9 becomes: possess be disposed in coaxial on multiple first conveying roller B1 ... respectively with multiple first conveying roller B1 ... be disposed in opposite to each other coaxial on multiple second conveying roller B2 ... the first conveying roller be driven in rotation (being fixed on the driven roller of drive roller shaft E1) B1 ... with along with the first conveying roller B1 ... rotation carry out driven rotation the second conveying roller (being fixed on the driven voller of driven roll shaft E2) B2 ... between while clamping sheet material P, carry.
In such sheet material conveyor A1 in the past, bad below easy generation: or when sheet material P being transported to the side Y1 of throughput direction Y, downstream side (front end) P1 of the side Y1 of the throughput direction Y in sheet material P is sagging, front end P1 contacts with discharge tray B4 in advance, or upstream side (rear end) P2 contacting in advance of discharge tray B4 being become to the side Y1 of throughput direction Y after feeding sheets P due to the front end P1 of sheet material P hung over the second conveying roller B2 ... the state α part of (with reference to figure 9(a) (the so-called rear end residual)).Or, also there is the sheet material P owing to being given curling (curl) in fixing operation and the situation that stackability is reduced.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2006-151617 publication.
Summary of the invention
The problem that invention will solve
Thus, sometimes arrange and the first and second conveying roller (B1, ), (B2, ) in the conveying roller of at least one party (be the first conveying roller B1 of upside in the example shown in Figure 10 described later, ) be disposed in above coaxial and have than roller B1, reinforcement roller (stiffeningroller) B3 of large diameter, (with reference to Figure 10), make the front end P1 of the sheet material P when from sheet material conveyor A1 sheet material P being transported to the side Y1 of throughput direction Y can not be at once sagging, in addition, make the rear end P2 of sheet material P can not be stuck in conveying roller B2 and produce rear end remain, or the sheet material P's making to suppress to give in fixing operation is curling.
Figure 10 be for illustration of be provided with strengthen roller B3 ... the instruction diagram of an example of sheet material conveyor A2 in the past.Figure 10 (a) be from conveying roller (B1 ...), (B2 ...) axis direction X see the summary lateral view of the discharge state of the sheet material P being transported to discharge tray B4.Figure 10 (b) is the summary lateral view of the feed status of sheet material P viewed from the throughput direction Y of sheet material P.
Sheet material conveyor A2 shown in Figure 10 in the sheet material conveyor A1 shown in Fig. 9, relative to the first conveying roller B1 ... be equipped on coaxial strengthen roller B3 ...Reinforcement roller B3 ... have than the first conveying roller B1 ... the large diameter of diameter, make with the first conveying roller B1 ... the structure (being fixed on drive roller shaft E1 in illustrative example) rotated integrally.That is, to each strengthen roller B3 ... all do the structure that paired sheet material P gives carrying capacity.
In such sheet material conveyor A2 in the past, by when sheet material P being transported to the side Y1 of throughput direction Y, utilization reinforcement roller B3 ... the undulations on axis direction X is given to sheet material P, strengthen sheet material P and try one's best maintaining the conveying posture of sheet material P, thus the rear end that is sagging in early days, sheet material P that can prevent the front end P1 of sheet material P is remained or sheet material P fixing curling.
, although in such sheet material conveyor A2 in the past, utilize and strengthen roller B3, can prevent that the front end P1's of sheet material P is sagging in early days, the rear end of sheet material P remains, or sheet material P's is fixing curling, but exist with by strengthening roller B3, relevant bad of the fluctuating of the sheet material P caused, particularly, exist and be directed into bending transport path D(bending on throughput direction Y with reference to Figure 11 described later at sheet material P), the bad of abnormal sound is produced because the sheet material P risen and fallen on axis direction X is transported to bending transport path D bending on throughput direction Y.
Figure 11 is the summary sectional view that the sheet material P risen and fallen at axis direction X viewed from axis direction X in an example of sheet material conveyor A2 is in the past transported to the state at the bending bending transport path D of throughput direction Y.
As shown in figure 11, when utilization is to go back to the conveying roller (B1 that (switchback) function carries out contrarotation, ), (B2, ) the sheet material P carrying (going back to) to throughput direction Y2 is directed to bending transport path D(in this example embodiment, for making the upset transport path of the positive and negative upset of sheet material P when forming dual-side image) time, exist with reinforcement roller B3, the sheet material P that axis direction X rises and falls forcibly is carried out the bending situation making to produce during fluctuating reinstatement abnormal sound (sound of specifically creak creak) along bending transport path D bending on throughput direction Y.Namely, since reinforcement roller B3 ... with the first conveying roller B1 ... in the difference of circumferential velocity owing to being caused by the difference of diameter, the operational throughput of the sheet material P that the unit time is average is different, so become large due to the amplitude of the fluctuating of the difference sheet material P of this operational throughput, correspondingly just become and easily produce abnormal sound.
This situation sheet material P transfer to keeping the larger state of the fluctuation ratio of sheet material P bending transport path D structure (specifically, strengthen roller B3 ... the image processing system being the miniaturization of shorter distance with the distance of bending transport path D) in become remarkable especially.
About this point, following structure is disclosed: strengthen roller becoming to be integrated carry out rotating, carrying recording materials as being fixed on conveying roller during the rotating forward of normal ADF state at patent documentation 1, removing the locking to conveying roller when overturning, carrying out driven rotation by the recording materials carried.
But, in the structure described in patent documentation 1, strengthen the complex structure of roller, correspondingly cause high cost, and the fluctuating carrying out the sheet material carried about forward rotation direction is at all considered.
So, the object of the invention is to, be provided in simple structure and while low cost, can while guarantee the stackability of sheet material, while with the hand of rotation of conveying roller independently suppress about by strengthen the sheet material that roller causes fluctuating bad (particularly, being transported to the abnormal sound of the sheet material of in the conveying direction bending bending transport path) generation sheet material conveyor and possess the image processing system of this sheet material conveyor.
For solving the scheme of problem
In order to solve described problem, the present inventor is through repeatedly attentively studying, obtain following opinion: work as structure in the past on the one hand, to each strengthen roller whole do paired sheet material give the structure of carrying capacity time, can produce to by the fluctuating strengthening the sheet material that roller causes relevant bad (particularly, be transported to the abnormal sound of the sheet material of bending transport path bending in the conveying direction), although and on the other hand when each is strengthened to roller whole make structure sheet material not being given to carrying capacity, can eliminate relevant to this fluctuating bad, but because reduce the carrying capacity of this sheet material, so the rear end producing this sheet material remains, the stackability of this sheet material can not be guaranteed.
The present inventor is conceived to this point, if found to make each part strengthening roller be not to the structure that sheet material gives carrying capacity or makes carrying capacity reduce, then not only simple structure and low cost, and the generation that the rear end of sheet material can be avoided residual, therefore, can while guarantee the stackability of sheet material, while make the amplitude of the fluctuating of sheet material diminish, thus, can to the hand of rotation of conveying roller independently suppress with this fluctuating relevant bad (particularly, be transported to the abnormal sound of the sheet material of in the conveying direction bending bending transport path) generation, complete the present invention.
That is, the invention provides sheet material conveyor, it is characterized in that, possess: be disposed in multiple first conveying rollers coaxially; Be disposed in opposite to each other with the plurality of first conveying roller respectively coaxial on, and clamp multiple second conveying rollers that sheet material carries out carrying between described first conveying roller rotated; And with the either one or both of described first and second conveying rollers be disposed in coaxial on, and there is the reinforcement roller of larger diameter, described reinforcement roller comprises: give first of carrying capacity to sheet material and strengthen roller and strengthen the second little reinforcement roller of the carrying capacity of roller to sheet material to the carrying capacity of sheet material than described first.
At this, be also comprise the concept of situation sheet material not being given to carrying capacity for described second " strengthening the carrying capacity of roller to sheet material to the carrying capacity of sheet material than described first little " strengthening roller.
In addition, the present invention also provides image processing system, it is characterized in that possessing described sheet material conveyor of the present invention and bending transport path bending on the throughput direction of sheet material, make the structure from described sheet material conveyor towards described bending transport path feeding sheets.
According to the present invention, because make described reinforcement roller be comprise described first to strengthen the structure that roller and described second strengthens roller, so simple structure, correspondingly can cost be suppressed lower.In addition, because described reinforcement roller gives on axis direction undulations to sheet material (specifically recording paper and original copy) can be utilized, and then described reinforcement roller comprises described first reinforcement roller sheet material being given to carrying capacity, so the generation that the rear end of this sheet material can be avoided residual, thus, the stackability of this sheet material can be guaranteed.And, because described reinforcement roller be not to each strengthen roller all do the structure that paired sheet material gives carrying capacity, but except described first reinforcement roller sheet material being given to carrying capacity, also comprise and than described first, the little described second reinforcement roller of the carrying capacity of roller to sheet material is strengthened to the carrying capacity of sheet material, so the difference that independently can reduce by described reinforcement roller and the sheet material operational throughput average with the different unit time of causing of the circumferential velocity of the conveying roller of this reinforcement roller on coaxial from the hand of rotation of described first and second conveying rollers, and then, the amplitude of the fluctuating of sheet material can be reduced, thus, can suppress relevant to this fluctuating bad (particularly, be transported to bending transport path bending in the conveying direction, such as, be transported to the abnormal sound of the sheet material of the described bending transport path in image processing system of the present invention) generation.
In the present invention, strengthen the concrete scheme of roller as described first and second, scheme (a) below and scheme (b) can be illustrated.
Namely, as scheme (a), can following scheme be illustrated: making described first to strengthen roller is first strengthens the structure that roller carries out at the conveying roller on coaxial rotating integratedly relative to this, make described second reinforcement roller be second strengthen roller relative to this and rotate structure freely at the conveying roller on coaxial.
Because in the program (a), making described first to strengthen roller is carry out relative to the described conveying roller on coaxial the structure that rotates integratedly, so when this conveying roller rotates, this first reinforcement roller also rotates.In addition, because making described second to strengthen roller is rotate structure freely relative to the described conveying roller on coaxial, even if so become this conveying roller and rotate, also not by the state freely of restraining of the rotation of this conveying roller.Thus, although strengthen giving carrying capacity to sheet material in roller described first, but because strengthen not giving carrying capacity to sheet material in roller described second, so correspondingly can make to be diminished by the difference of the operational throughput of described reinforcement roller and the sheet material average from the different unit time of causing of the circumferential velocity of the conveying roller of this reinforcement roller on coaxial.
In addition, as scheme (b), can following scheme be illustrated: make described first to strengthen roller and described second and strengthen roller and be: first and second strengthens roller relative to this and rotate integratedly at the conveying roller on coaxial, and the structure making the friction coefficient on the surface of this second reinforcement roller less than the friction coefficient on the surface of this first reinforcement roller.
Because in the program (b), what make to carry out integratedly rotating relative to the described conveying roller on coaxial described first strengthens roller and described second to strengthen roller is this second friction coefficient strengthening the surface of roller first strengthening the little structure of the friction coefficient on the surface of roller than this, so sheet material second is strengthened roller at this and become easy slip than at this first reinforcement roller.Thus, because strengthen becoming the carrying capacity of sheet material of roller described second to strengthen roller little to the carrying capacity of sheet material than described first, so correspondingly can make to be diminished by the difference of the operational throughput of the described reinforcement roller sheet material average with the different unit time of causing of the circumferential velocity with the conveying roller of this reinforcement roller on coaxial.In addition, the described second friction coefficient strengthening the surface of roller also can be made to be friction coefficient sheet material not being given to carrying capacity.
In the present invention, can following scheme be illustrated: described reinforcement roller and with the conveying roller of this reinforcement roller on coaxial at this conveying roller axis direction Shang Yi center be reference symmetry arrange.
Because in this specific item, described reinforcement roller and with the conveying roller of this reinforcement roller on coaxial at described axis direction Shang Yi center be reference symmetry arrange, so Neng Yi center be reference symmetry give carrying capacity to sheet material.Thus, can prevent from wandering off the generation of (skew).In this scenario, suitably use in the structure can carried at the sheet material of center reference.
In the present invention, following scheme can be illustrated: make the central portion on the described axis direction in described reinforcement roller be that described first strengthens roller, both ends are described second reinforcement roller.
Because in this specific item, the central portion on the described axis direction in described reinforcement roller is made to be described first reinforcement roller, both ends are described second reinforcement roller, so while central portion on described axis direction realizes the conveying of stable sheet material, the bad generation relevant to the fluctuating of this sheet material can be suppressed.
In the present invention, following scheme can be illustrated: make the nearest reinforcement roller in the decentering position on described axis direction in described reinforcement roller be described first reinforcement roller.
Because in this specific item, the nearest reinforcement roller in the decentering position on described axis direction in described reinforcement roller is made to be described first reinforcement roller, so carrying capacity can be given at this near center location, even if when using the sheet material of sizes, also can sheet material that positively delivery size is less than upperlimit.
In the present invention, following scheme can be illustrated: make the nearest reinforcement roller in the decentering position on described axis direction in described reinforcement roller be the structure of the sheet material carrying the minimum size that can use in the image processing system possessing this sheet material conveyor.
Because in this specific item, the nearest reinforcement roller in the decentering position on described axis direction in described reinforcement roller is made to be the structure of the sheet material carrying the minimum size that can use in the image processing system possessing this sheet material conveyor, so in the structure of carrying at the sheet material of center reference, even the sheet material of minimum size, the sheet material of this minimum size also positively can be carried.In this case, the reinforcement roller nearest from described center can be arranged on the position carrying the sheet material of the minimum size that can use.
In the present invention, described reinforcement roller can be arranged on the axle of the conveying roller with this reinforcement roller on coaxial, also can be arranged on this conveying roller itself.
Such as, following scheme can be illustrated: described reinforcement roller is arranged on the one-sided end on the described axis direction of the conveying roller with this reinforcement roller on coaxial.
Because in this specific item, described reinforcement roller is arranged on the one-sided end on the described axis direction of the conveying roller with this reinforcement roller on coaxial, so situation about leaving from the described conveying roller coaxial at described axis direction with described reinforcement roller (such as, be arranged on the situation of the central authorities between adjacent conveying roller) compare, even if the peak swing of the fluctuating of sheet material is identical, also the amplitude scale of the difference to the diameter of described reinforcement roller and the diameter of described conveying roller can be made to become greatly, correspondingly can material cost be suppressed lower.And then, described reinforcement roller and described conveying roller can be made a combiner, the shortening of the assembling procedure of this reinforcement roller and this conveying roller can be realized.
Invention effect
As described above, because according to the present invention, described reinforcement roller comprise to sheet material give described first of carrying capacity strengthen roller and to the carrying capacity of sheet material to strengthen than described first the carrying capacity of roller to sheet material little described second strengthen roller, so in simple structure and while low cost, can while guarantee the stackability of sheet material, while independently suppress and the generation by relevant bad (particularly, being transported to the abnormal sound of the sheet material of in the conveying direction bending bending transport path) of the fluctuating strengthening the sheet material that roller causes to the hand of rotation of conveying roller.
Accompanying drawing explanation
Fig. 1 is the summary sectional view of the image processing system of the sheet material conveyor possessing embodiments of the present invention viewed from front.
Fig. 2 is the summary sectional view of the transport path illustrated in the image processing system shown in Fig. 1.
Fig. 3 is the summary lateral view of the sheet material conveyor viewed from the throughput direction of paper the image processing system shown in Fig. 1.
Fig. 4 is the summary construction diagram that first and second of the first embodiment strengthens roller and peripheral part thereof, a () is the summary lateral view of the first reinforcement roller segment viewed from throughput direction, b () is the summary lateral view of the first reinforcement roller segment viewed from axis direction, c () is the summary lateral view of the second reinforcement roller segment viewed from throughput direction, (d) is the summary lateral view of the second reinforcement roller segment viewed from axis direction.
Fig. 5 is the summary construction diagram that first and second of the second embodiment strengthens roller and peripheral part thereof, a () is the summary lateral view of the first reinforcement roller segment viewed from throughput direction, b () is the summary lateral view of the first reinforcement roller segment viewed from axis direction, c () is the summary lateral view of the second reinforcement roller segment viewed from throughput direction, (d) is the summary lateral view of the second reinforcement roller segment viewed from axis direction.
Fig. 6 is the table that the different position relationship of reinforcement roller according to the destination of image processing system and the size of external diameter are shown.
Fig. 7 is the table of the result that comparative example 1,2 and embodiment are shown.
Fig. 8 illustrates the table to the result that the generation of the different abnormal sound in upset transport path of the kind according to paper is investigated in comparative example 1 and embodiment, a () is the table of the result by antiquarian that comparative example 1 is shown, (b) is the table of the result by antiquarian that embodiment is shown.
Fig. 9 is the instruction diagram of an example of the sheet material conveyor in the past reduced for illustration of stackability, a () is the summary lateral view of the discharge state of the sheet material being transported to discharge tray viewed from conveying roller axis direction, (b) is the summary lateral view of the feed status of sheet material viewed from the throughput direction of sheet material.
Figure 10 is the instruction diagram for illustration of the example being provided with the sheet material conveyor in the past strengthening roller, a () is the summary lateral view of the discharge state of the sheet material being transported to discharge tray viewed from conveying roller axis direction, (b) is the summary lateral view of the feed status of sheet material viewed from the throughput direction of sheet material.
Figure 11 is the summary sectional view that the sheet material risen and fallen in the axial direction viewed from axis direction in an example of sheet material conveyor is in the past transported to the state of bending transport path bending in the conveying direction.
Detailed description of the invention
Below, reference accompanying drawing is while be described embodiments of the present invention.In addition, embodiment shown below is example the present invention specialized, and is not the embodiment of the character limiting technical scope of the present invention.
(the integrally-built explanation of image processing system)
Fig. 1 is the summary sectional view of the image processing system 100 of the sheet material conveyor 30 possessing embodiments of the present invention viewed from front.
Image processing system 100 shown in Fig. 1 be according to from outside transmit view data to sheet materials such as recording papers (hereinafter referred to as paper.) P forms the color image forming device of polychrome and monochromatic image.Image processing system 100 possesses original document reading apparatus 108 and apparatus body 110, and apparatus body 110 is provided with image forming part 102 and sheet transport system 103.
Image forming part 102 possess exposure components 1, multiple developing device 2 ..., multiple photosensitive drums 3 ..., multiple cleaning section 4 ..., multiple charged device 5 ..., intermediate transfer belt assembly 6, multiple toner Cartridge assembly 21 ... and fixing component 7.
In addition, sheet transport system 103 possesses the sheet feed section 80 comprising paper supply tray 81 and manual feed trays 82, transport path described later (main transport path 76, upset transport path 77) and discharge tray 91.
Being provided with the original copy mounting table 92 be made up of clear glass of mounting original copy (sheet material) on the top of apparatus body 110, being provided with the optical module 90 for reading original copy in the bottom of original copy mounting table 92.In addition, the upside of original copy mounting table 92 is provided with original document reading apparatus 108.Original copy is automatically transported to the top of original copy mounting table 92 by original document reading apparatus 108.In addition, original document reading apparatus 108 relative to apparatus body 110 with front side unfolding mode rotatably mounted assemble, by the top of open original copy mounting table 92, thus become and can load original copy in the hand mode of putting.
Original document reading apparatus 108 can read and automatically carry out the original copy carried or the original copy be positioned in original copy mounting table 92.The integral image of the original copy read with original document reading apparatus 108 sends to the apparatus body 110 of image processing system 100 as view data, the image formed based on view data in apparatus body 110 is recorded in paper P.
In image processing system 100, the view data of process is the corresponding view data of coloured image with the multiple color of use (at this, being each color of black (K), cyan (C), carmetta (M), yellow (Y)).Therefore, developing device 2 ..., photosensitive drums 3 ..., cleaning section 4 ..., charged device 5 ... and toner Cartridge assembly 21 ... be set as respectively multiplely (respectively arranging four at this, black, cyan, carmetta, yellow respectively), make to form multiple (in this case four kind) image corresponding to each color, form multiple (in this case four) image workstation by them.
Charged device 5 ... be for make photosensitive drums 3 ... the uniformly charged charged elements of current potential for regulation, except charge type as shown in Figure 1, the charged device of the roll shape of contact-type, brush type can be used as.
Exposure components 1 is configured to the laser scanning assembly (LSU) possessing laser emitting portion and catadioptre.Exposure components 1 be provided with scanning laser beam polygon mirror and for the laser aiming of will be reflected by this polygon mirror to photosensitive drums 3 ... the optical element such as lens, mirror.In addition, as exposure components 1, in addition, use can also be adopted such as by EL(electroluminescence), LED(light-emitting diode) etc. luminous element line up the gimmick of the writing head of array-like.
Exposure components 1 by according to the view data of input respectively to charged photosensitive drums 3 ... expose, thus each photosensitive drums 3 ... surface form the electrostatic latent image corresponding to view data.
Toner Cartridge assembly 21 ... be collecting toner assembly, become to developing device 2 ... developing trough supply toner.In the apparatus body 110 of image processing system 100, to from toner Cartridge assembly 21 ... be supplied to developing device 2 ... the toner of developing trough be that certain mode controls to make the toner concentration of the developer in this developing trough.
Developing device 2 ... be utilize the toner of four looks (Y, M, C, K) to be formed in each photosensitive drums 3 ... on electrostatic latent image carry out the assembly of development.In addition, cleaning section 4 ... to remain in development and image transfer printing after photosensitive drums 3 ... on the toner on surface carry out removing, reclaiming.
Be configured in photosensitive drums 3 ... the intermediate transfer belt assembly 6 of top possess work as middle transfer body intermediate transfer belt 61, intermediate transfer belt drive roller 62, intermediate transfer belt driven voller 63, multiple intermediate transfer rollers 64 ... and intermediate transfer belt cleaning assemblies 65.
Intermediate transfer rollers 64 ... four are provided with accordingly with each color of Y, M, C, K.Intermediate transfer belt drive roller 62 and intermediate transfer belt driven voller 63 and intermediate transfer rollers 64 ... together set up intermediate transfer belt 61, carry out rotary actuation, intermediate transfer belt 61 carries out turn-taking movement on moving direction (in Fig. 1 arrow M direction) thus, therewith concomitantly driven voller 63 and intermediate transfer rollers 64 ... carry out driven rotation.
To each intermediate transfer rollers 64 ... be applied for being formed in photosensitive drums 3 ... on toner image be transferred to transfer bias on intermediate transfer belt 61.
Intermediate transfer belt 61 be set to each photosensitive drums 3 ... contact.Intermediate transfer belt 61 by overlap to form successively photosensitive drums 3 ... the toner image of each color carry out transfer printing, thus form colored toner image (multi-color toner picture) on surface.It is the band of the ring-type of the film of 100 μm ~ about 150 μm that intermediate transfer belt 61 becomes such as use thickness.
From photosensitive drums 3 ... to the toner image of intermediate transfer belt 61 transfer printing by the backside contact with intermediate transfer belt 61 intermediate transfer rollers 64 ... carry out.In order to transfer printing toner image, to intermediate transfer rollers 64 ... apply high-tension transfer bias (with the high potential of the charged polarity (-) opposite polarity (+) of toner).Intermediate transfer rollers 64 ... based on the metal of diameter 8mm ~ 10mm (such as corrosion-resistant steel) axle, its surface is by the elastomeric material of electric conductivity (such as, EPDM(ethylenepropylenedienemonomerrubber: ethylene propylene diene rubber), resin material such as foaming urethane etc.) roller that covers.By the elastomeric material of this electric conductivity, make intermediate transfer rollers 64 ... for applying high-tension transfer printing electrode equably to intermediate transfer belt 61.Although in the present embodiment, use the transfer printing electrode of roll shape as transfer printing electrode, in addition, can also the transfer printing electrodes such as brush be used.
As has been described, each photosensitive drums 3 ... on transfer in row development according to colors toner image be layered on intermediate transfer belt 61.Be layered in the turn-take movement of the toner image on intermediate transfer belt 61 by intermediate transfer belt 61, be transferred on paper P by the transfer roll 10 of the secondary transfer printing mechanism part forming the contact position being configured in paper P and intermediate transfer belt 61.But, as the structure of secondary transfer printing mechanism part, be not limited to transfer roll, the transfer printing structures such as corona charging device (coronacharger), transfer belt can be used.
Now, under the state being formed with transfer nip (nip) between intermediate transfer belt 61, transfer roll 10 is applied for the voltage (with the high potential of the charged polarity (-) opposite polarity (+) of toner) of toner transfer to paper P.Mutually crimped with intermediate transfer belt drive roller 62 by transfer roll 10, thus form transfer nip between transfer roll 10 and intermediate transfer belt 61.In order to stably obtain transfer nip, either party making in transfer roll 10 and intermediate transfer belt drive roller 62 is the hard roller be made up of hard material (metal etc.), makes the opposing party be the resilient roller be made up of soft material (resin material such as elastic caoutchouc, foaming property resin).
When to be undertaken from intermediate transfer belt 61 to the transfer printing of the toner image on paper P by transfer roll 10, toner can not be transferred on paper P and remain on intermediate transfer belt 61 sometimes.The toner remained on intermediate transfer belt 61 becomes the reason of the colour mixture producing toner in next operation.Thus, the toner remained on intermediate transfer belt 61 is undertaken removing, reclaiming by intermediate transfer belt cleaning assemblies 65.Specifically, the cleaning element (such as, cleaning blade) contacted with intermediate transfer belt 61 is possessed at intermediate transfer belt cleaning assemblies 65.Driven voller 63 supports from inner side (dorsal part) intermediate transfer belt 61, and cleaning element contacts with intermediate transfer belt 61 in the mode carrying out pressing towards driven voller 63 from outside.
Paper supply tray 81 is the pallets containing the paper P carrying out image formation (printing) in advance, is arranged on the below of the exposure components 1 in apparatus body 110.In addition, the paper P carrying out image formation (printing) is placed with at manual feed trays 82.Discharge tray 91 is located at the top of the image forming part 102 in apparatus body 110, has gathered to face down (face-down) the paper P that image forms (printing).
In addition, be provided with for the paper P sent here from paper supply tray 81 and manual feed trays 82 being delivered to the main transport path 76 of discharge tray 91 through transfer roll 10 and fixing component 7 at apparatus body 110.The warm-up mill 71 in pickup roller 11a, 11b, multiple (in this case first and second) conveying roller 12a, 12b, registration roller 13, transfer roll 10, fixing component 7 and backer roll 72 is configured with near main transport path 76.Multiple (in this case third and fourth) conveying roller 12c, 12d is configured with near upset transport path 77.
First to fourth conveying roller 12a ~ 12d be for promoting, the small-sized roller of the conveying of auxiliary paper P.In addition, pickup roller 11a is provided near the paper supply side of paper supply tray 81, and from paper supply tray 81 is rubbed with the hands one by one, paper P supplies to main transport path 76.Similarly, pickup roller 11b is provided near the paper supply side of manual feed trays 82, and from manual feed trays 82 is rubbed with the hands one by one, paper P supplies to main transport path 76.
In addition, registration roller 13 is the rollers of the paper P remaining on conveying in main transport path 76 for the time being.And, registration roller 13 at the downstream side of the side Y1 of the throughput direction Y of the front end and paper P that make the toner image on intermediate transfer belt 61 (hereinafter referred to as front end.) P1 aim at timing, paper P is transported to transfer roll 10.
Fixing component 7 is assemblies unfixing toner picture being fixed on paper P, possesses the warm-up mill 71 and backer roll 72 that work as fixing roller.Warm-up mill 71 becomes by being driven in rotation, thus together clamps paper P with the backer roll 72 carrying out driven rotation and carry paper P.In addition, the temperature booster 71a that warm-up mill 71 becomes by being arranged on inner side heats, and based on the signal from temperature detector 71b, maintains the fixing temperature of regulation.The warm-up mill 71 being undertaken by temperature booster 71a heating by together the multi-color toner being transferred in paper P being attached to paper P as hot pressing with backer roll 72, thus carries out melting, mixing, crimping to multi-color toner picture, carries out heat fixing to paper P.
(about transport path)
Fig. 2 is the summary sectional view of the transport path 76,77 illustrated in the image processing system 100 shown in Fig. 1.
As depicted in figs. 1 and 2, image processing system 100, as describing, possesses main transport path 76 and overturns the transport path of transport path 77 as conveying paper P, become the structure of the sheet material conveying of center reference.Upset transport path 77 is bending on throughput direction Y, forms bending transport path.
Main transport path 76 is made to be the transport path carrying paper P between sheet feed section 80 and sheet material conveyor 30.
Upset transport path 77 is the transport paths carried the paper P of the reciprocal opposite side Y2 of the side Y1 being transported to throughput direction Y, become through the part from sheet material conveyor 30 to the main transport path 76 of the branched portion Sa fixing component 7 and sheet material conveyor 30 be connected to and the connecting portion Sb(of main transport path 76 between image forming part 102 and sheet feed section 80 with reference to figure 1) transport path.Therefore, in main transport path 76 and upset transport path 77, as the transport path shared between sheet material conveyor 30 and branched portion Sa.
Fork pawl 84 is equipped at branched portion Sa.Fork pawl 84 is configured to take following posture: the paper P from fixing component 7 be directed to the prime (Fig. 2 with the posture shown in solid line) of sheet material conveyor 30 1 side and by the contrarotation (arrow A 2 side in fig. 2 rotates up) of the conveying roller described later 31,32 in sheet material conveyor 30 the paper P of the rightabout opposite side Y2 being transported to the side Y1 of throughput direction Y be directed to the second (Fig. 2 with the posture shown in long and two-short dash line) overturning transport path 77 side.
In the image processing system 100 possessing such structure, the paper P supplied from each paper supply tray 81,82 is transported to registration roller 13 by the first conveying roller 12a arranged along main transport path 76, carried by transfer roll 10 in the timing of mating with the front end of the toner image on intermediate transfer belt 61 the front end P1 of paper P, toner image is transferred on paper P.After this, paper P, by fixing component 7, carries out melting, set with heat to the unfixing toner on paper P thus.
And, when being prime, the printing of one-sided image carrying out paper P when making fork pawl 84, paper P from fixing component 7 is transported to the conveying roller 31,32 rotating forward (arrow A 1 side in fig. 2 rotates up) through the second conveying roller 12b, be discharged to discharge tray 91.
In addition, when printing paper P two-sided, the P1 side, front end that have passed the paper P of fixing component 7 is shifted into outside for the time being, by the upstream side of the side Y1 of the throughput direction Y at paper P (hereinafter referred to as rear end.) P2 is by after branched portion Sa, make fork pawl 84 for second, conveying roller 31,32 contrarotation, thus paper P is transferred (going back to) opposite side Y2 to throughput direction Y, an edge upset transport path 77 pros and cons upset is transported to connecting portion Sb with third and fourth conveying roller 12c, 12d.And, come the paper P of transfer nip after the back side is printed through registration roller 13 conveying, carried by the conveying roller 31,32 rotated forward, be discharged to discharge tray 91.
(about sheet material conveyor)
Fig. 3 is the summary lateral view of the sheet material conveyor 30 viewed from the throughput direction Y of paper P the image processing system 100 shown in Fig. 1.
As shown in Figures 2 and 3, the image processing system 100 of present embodiment possesses sheet material conveyor 30 and the rotary driving part 40 of conveying paper P.
Sheet material conveyor 30 possess multiple (in this case four) first discharge roller (example of the first conveying roller) 31 ... with multiple (in this case four) second distributing roller (example of the second conveying roller) 32 ...First discharge roller 31 ... make mutual same footpath, be all disposed in coaxially.Second distributing roller 32 ... make mutual same footpath, respectively with first discharge roller 31 ... be disposed in opposite to each other coaxially.And, sheet material conveyor 30 becomes, carry out rotary actuation first discharge roller (driven roller) 31 ... with along with first discharge roller 31 ... driving rotate carry out driven rotation the second distributing roller (driven voller) 32 ... between clamp paper P while carry.Specifically, sheet material conveyor 30 1 aspect the first and second distributing rollers (31 ...), (32 ...) paper P is transported to discharge tray 91 1 side when rotating forward, when carrying out contrarotation, paper P is transported to upset transport path 77 1 side on the other hand.
Sheet material conveyor 30 also possesses drive roller shaft 31a and driven roll shaft 32a.First discharge roller 31 ... be fixed on drive roller shaft 31a.Second distributing roller 32 ... with first discharge roller 31 ... be fixed on driven roll shaft 32a opposite to each other.In addition, sheet material conveyor 30 also possess by the second distributing roller 32 ... towards first discharge roller 31 ... carry out the force application component (in this case wind spring) 33 exerted a force.
First and second distributing rollers (31 ...), (32 ...) and force application component 33 be located at the body frame 30a of sheet material conveyor 30, be provided with first discharge roller 31 ... one-sided end the arranging from the body frame 30a of sheet material conveyor 30 to axis direction (the arrow X Fig. 3) of drive roller shaft 31a protruding outsidely.
At this, make drive roller shaft 31a be single roll shaft, arrange to rotate about the axis mode freely relative to the body frame 30a of sheet material conveyor 30.
At this, X is set side by side with multiple (in this case two) driven roll shaft 32a in the axial direction, be fixed with respectively multiple (in this case two) second distributing roller 32 ...And, driven roll shaft 32a with make the second distributing roller 32 ... with corresponding first discharge roller 31 ... opposed mode, rotates about the axis freely relative to the body frame 30a of sheet material conveyor 30 and (in figure arrow Z-direction) moves back and forth and freely arrange along the vertical direction.And sheet material conveyor 30 becomes, with first discharge roller 31 ... with the second distributing roller 32 ... between roll gap portion N in by the second distributing roller 32 ... the state of pressing is while carry out clamping while carry to paper P.
Specifically, force application component 33 become by the second distributing roller 32 ... towards first discharge roller 31 ... exert a force, at this, be configured in the second distributing roller 32 ... with the body frame 30a of sheet material conveyor 30 first discharge roller 31 ... opposition side position between.In addition, make to be caused by force application component 33 the second distributing roller 32 ... to first discharge roller 31 ... pressing force be the pressure suitably carrying the degree of paper P.
Sheet material conveyor 30 also possess multiple (in this case four) strengthen roller 34 ...Reinforcement roller 34 ... with the first and second distributing rollers (31 ...), (32 ...) at least one party distributing roller (in this case the second distributing roller 32 ...) be disposed in coaxial on, and have than the second distributing roller 32 ... the large diameter of diameter.In addition, strengthen roller 34 ... can with the first and second distributing rollers (31 ...), (32 ...) either party be disposed in coaxial on, also can with the first and second distributing rollers (31 ...), (32 ...) both sides be disposed in coaxial on.With the first and second distributing rollers (31 ...), (32 ...) both sides arrange when, first discharge roller 31 ... the reinforcement roller 34 of side and the second distributing roller 32 ... it is can not be overlapping on axis direction X that the reinforcement roller 34 of side arranges.
Thus, sheet material conveyor 30 becomes, by carry paper P time, utilize strengthen roller 34 ... the undulations on axis direction X is given to paper P, paper P is strengthened, thus can prevent the rear end that is sagging in early days, paper P of the front end P1 of paper P from remaining or paper P fixing curling.
Specifically, strengthen roller 34 ... relative to the second distributing roller 32 ... be arranged on the end of the side X1 on axis direction X or the end of opposite side X2.In addition, strengthen roller 34 ... also can arrange relative to driven roll shaft 32a.
At this, reinforcement roller 34 ... can every the second distributing roller 32 ... in each roller 32 ... to be one or morely configured singly, also can every the second distributing roller 32 ... in each roller 32 ... one or more come be configured multiplely.In addition, also can be the combination of these configuration structures.In the present embodiment, be respectively arranged with between two rollers 32,32 and two rollers 32,32 inside it at two ends two strengthen roller 34 ...
Rotary driving part 40 be to be provided with first discharge roller 31 ... drive roller shaft 31a carry out the drive division of rotary actuation, possess feed drive motor 41(in this case stepping motor) and the rotary actuation from feed drive motor 41 is passed to the drive transmission mechanism 42 of drive roller shaft 31a.
Feed drive motor 41 is arranged on apparatus body 110 in the mode of S. A. 41a X in the axial direction.
At this, the gear row that drive transmission mechanism 42 arranges multiple gear by arow are formed, and possess driven wheel 42a, roller gear 42b and intermediate gear 42c.
Driven wheel 42a is attached at the S. A. 41a of feed drive motor 41.Roller gear 42b is attached at the end protruding outside from the body frame 30a of sheet material conveyor 30 to axis direction X of drive side roll shaft 31a.The S. A. 110a that intermediate gear 42c is fixed on apparatus body 110 rotatably supports, and is engaged with driven wheel 42a and roller gear 42b.
Feed drive motor 41 becomes, by with can obtain from control part (omit diagram) drive singal (connection signal) or drive the mode of danger signal (cut-off signal), be electrically connected with the output system of this control part, the rotation indicator signal of instruction hand of rotation is sent to feed drive motor 41 makes feed drive motor 41 drive, thus make first discharge roller 31 ... can to the side Y1 of a direction A1(throughput direction Y, with reference to figure 2) or the opposite side Y2 of another direction A2(throughput direction Y, with reference to figure 2) carry out rotary actuation.
In sheet material conveyor 30 described above, because when the paper P carrying out going back to is directed into upset transport path 77 (with reference to figure 2), with reinforcement roller 34, when bending and fluctuating restored to the being forced property of upset transport path 77 that the paper P edge that axis direction X rises and falls is bending on throughput direction Y, at reinforcement roller 34, with the second distributing roller 32, the operational throughput of the paper P that the difference due to circumferential velocity causes the unit time average is different, so caused the amplitude of the fluctuating of paper P to become large by the difference of this operational throughput, correspondingly become and easily produce abnormal sound, and in the present embodiment, strengthen roller 34, roller 34a is strengthened by paper P is given to carrying capacity first, roller 34a is strengthened than first with to the carrying capacity of paper P, to the carrying capacity of paper P little (comprise situation paper P not being given to carrying capacity.) second strengthen roller 34b ... form, the structure of the first and second following embodiments can be made.
(the first embodiment)
In the first embodiment, make the first reinforcement roller 34a ... for with on axis direction X inner side two the second distributing rollers 32 ... carry out the structure rotated integratedly.Make the second reinforcement roller 34b ... for relative to superolateral two the second distributing rollers 32 of axis direction X ... rotate about the axis structure freely.
Fig. 4 is the summary construction diagram that first and second of the first embodiment strengthens roller 34a, 34b and peripheral part thereof.Fig. 4 (a) illustrates the summary lateral view of the first reinforcement roller 34a part viewed from throughput direction Y.Fig. 4 (b) illustrates the summary lateral view of the first reinforcement roller 34a part viewed from axis direction X.Fig. 4 (c) illustrates the summary lateral view of the second reinforcement roller 34b part viewed from throughput direction Y.Fig. 4 (d) illustrates the summary lateral view of the second reinforcement roller 34b part viewed from axis direction X.In addition, in Fig. 4 (a) and Fig. 4 (b), make first of right side strengthen roller 34a part representatively illustrate two shown in Fig. 3 first strengthen roller 34a ... part, in Fig. 4 (c) and Fig. 4 (d), make second of left side strengthen roller 34b part representatively illustrate two shown in Fig. 3 second strengthen roller 34b ... part.This situation is also identical to Fig. 5 described later.
As shown in Figure 4, the second distributing roller 32 ... have at the side X1 of axis direction X or the one-sided end of opposite side X2 and strengthen roller department of assembly 32b.
As shown in Fig. 4 (a) He Fig. 4 (b), first reinforcement roller 34a ... all make external diameter for footpath and internal diameter and the second distributing roller 32 ... the external diameter of reinforcement roller department of assembly 32b be roughly the shape of the ring-type in same footpath, inner peripheral surface 341a by sticker F be fixed on the second distributing roller 32 ... the outer peripheral face 321a of reinforcement roller department of assembly 32b.
In addition, as shown in Fig. 4 (c) He Fig. 4 (d), second strengthen roller 34b ... all make external diameter and first strengthen roller 34a ... external diameter be same footpath and internal diameter and the second distributing roller 32 ... the external diameter of reinforcement roller department of assembly 32b be roughly the shape of the ring-type in same footpath.And, second strengthen roller 34b ... with inner peripheral surface 341b the second distributing roller 32 ... reinforcement roller department of assembly 32b outer peripheral face 321a slide mode be inserted into the second distributing roller 32 ...
In addition, the body frame 30a of sheet material conveyor 30 be provided with cover driven roll shaft 32a cover component 36(with reference to figure 4(c)).Thus, second reinforcement roller 34b ... side X1 on axis direction X and the movement of opposite side X2 by first discharge roller 31 ... strengthen the strengthening roller 34b face 36a in opposite directions limited with second of roller 34b face 32c in opposite directions and cover component 36 with second, become can prevent from the second distributing roller 32 ... come off.
In addition, in order to alleviate the burden to paper P (such as, the generation of scar etc.) when giving undulations to paper P, first and second strengthen rollers (34a ...), (34b ...) can be made up of elastic components such as foaming property resins.
As the material of foaming property resin, such as, the material such as polyurethane (specifically urethane sponge (urethanesponge) (INOAC Inc., PORON, LE-20)), silicone rubber, ethylene propylene diene rubber (EPDM) can be used.In addition, as the first and second distributing rollers 31,32, the POM(Polyacetal that such as intensity, impact resistance are outstanding can be enumerated: polyacetal) etc. resin.
(the second embodiment)
In this second embodiment, make the first reinforcement roller 34a ... with second strengthen roller 34b ... be all with the second distributing roller 32 ... carry out integratedly rotating and make the second reinforcement roller 34b ... the friction coefficient on surface strengthen than first roller 34a ... the little structure of the friction coefficient on surface.
Fig. 5 is the summary construction diagram that first and second of the second embodiment strengthens roller 34a, 34b and peripheral part thereof.Fig. 5 (a) illustrates the summary lateral view of the first reinforcement roller 34a part viewed from throughput direction Y.Fig. 5 (b) illustrates the summary lateral view of the first reinforcement roller 34a part viewed from axis direction X.Fig. 5 (c) illustrates the summary lateral view of the second reinforcement roller 34b part viewed from throughput direction Y.Fig. 5 (d) illustrates the summary lateral view of the second reinforcement roller 34b part viewed from axis direction X.
As shown in Figure 5, the second distributing roller 32 ... side X1 on axis direction X or the one-sided end of opposite side X2 have strengthens roller department of assembly 32b.
First reinforcement roller 34a ... with second strengthen roller 34b ... all make external diameter for footpath and internal diameter and the second distributing roller 32 ... the external diameter of reinforcement roller department of assembly 32b be roughly the shape of the ring-type in same footpath, inner peripheral surface 341a by sticker F be fixed on the second distributing roller 32 ... reinforcement roller assembling 2b outer peripheral face 321a.
In addition, as shown in Fig. 5 (c) He Fig. 5 (d), second strengthen roller 34b ... surface with friction coefficient to strengthen than first roller 34a ... little superficial layer (the in this case release property resin bed) 342b of the friction coefficient on surface be coated to.
In addition, in the same manner as the first embodiment, in order to alleviate the burden to paper P (such as, the generation of scar etc.) when giving undulations to paper P, first and second strengthen rollers (34a ...), (34b ...) can be made up of elastic components such as foaming property resins.
As the material of foaming property resin, the such as material such as polyurethane (specifically urethane sponge (INOAC Inc., PORON, LE-20)), silicone rubber, ethylene propylene diene rubber (EPDM) can be used.As resin bed 342b, the fluorine resin materials such as such as polytetrafluoroethylene (polytetrafluoroethylene) can be used.In addition, as the first and second distributing rollers 31,32, the POM(polyacetal that such as intensity, impact resistance are outstanding can be enumerated) etc. resin.
As shown in Figure 3, in the first and second embodiments, the second distributing roller 32 ... with reinforcement roller 34 ... ((34a ...), (34b ... )) at axis direction X Shang Yi center be reference symmetry arrange.
In detail, in the first and second embodiments, make reinforcement roller 34 ... ((34a ...), (34b ... )) in axis direction X on central portion be the first reinforcement roller 34a ..., both ends be the second reinforcement roller 34b ...
Specifically, on the axis direction X of the structure of carrying at the sheet material of center reference, center β (with reference to the figure 3) left and right directions shown in lateralization X1 and opposite side X2(Fig. 3 toward the outside from paper P) be respectively arranged with the second distributing roller 32, first in order and strengthen roller 34a, second and strengthen roller 34b and the second distributing roller 32.
That is, make reinforcement roller 34 ... ((34a ...), (34b ... )) in the reinforcement roller that decentering position β is nearest on axis direction X be the first reinforcement roller 34a ...
And, make reinforcement roller 34 ... ((34a ...), (34b ... )) in the reinforcement roller that decentering position β is nearest on axis direction X be the structure of the paper P that can carry the minimum size (being such as called the minimum size of A6 size) that can use in image processing system 100.Specifically, the reinforcement roller that decentering position β is nearest is arranged with the interval that the width on the axis direction X of the paper P than the minimum size that can use is little.
According to sheet material conveyor 30 described above since make reinforcement roller 34 ... for by first strengthen roller 34a ... with second strengthen roller 34b ... the structure formed, so simple structure, and correspondingly can suppress lower by cost.In addition, because can utilize strengthen roller 34 ... the undulations on axis direction X is given to paper P, and then strengthen roller 34 ... comprise to paper P give first of carrying capacity strengthen roller 34a ..., so the generation that the rear end of paper P can be avoided residual, the stackability of paper P can be guaranteed thus.And, because strengthen roller 34, not that roller 34 is strengthened to each, all do the structure that paired paper P gives carrying capacity, but the first reinforcement roller 34a except giving carrying capacity to paper P, in addition, also comprise and than first, roller 34a is strengthened to the carrying capacity of paper P, the second reinforcement roller 34b little to the carrying capacity of paper P, so with can the first and second distributing rollers (31, ), (32, ) hand of rotation A1, the orientation independent ground of A2, make by reinforcement roller 34, with the second distributing roller 32, the difference of operational throughput of the difference of circumferential velocity unit time of causing average paper P diminish, and then, the amplitude of the fluctuating of paper P can be made to diminish, thus, can suppress relevant to this fluctuating bad (particularly, be transported to the abnormal sound of paper P of upset transport path 77) generation.
In addition, in the first embodiment, by make the first reinforcement roller 34a ... for with the second distributing roller 32 ... carry out the structure rotated integratedly, thus when the second distributing roller 32 ... during rotation, first strengthen roller 34a ... also rotate.In addition, since make the second reinforcement roller 34b ... for relative to the second distributing roller 32 ... rotate about the axis structure freely, even if so the second distributing roller 32 ... rotate, also can become not by the second distributing roller ... rotation the state freely of restraining.Thus, although first strengthen roller 34a ... carrying capacity is given to paper P, but because second strengthen roller 34b ... carrying capacity can not be given to paper P, thus correspondingly can make by reinforcement roller 34 ... ((34a ...), (34b ... )) with the second distributing roller 32 ... the difference of operational throughput of the difference of circumferential velocity unit time of causing average paper P diminish.
In addition, in this second embodiment, by make with the second distributing roller 32 ... carry out integratedly rotating first strengthen roller 34a ... with second strengthen roller 34b ... for described second strengthen roller 34b ... the friction coefficient on surface strengthen than first roller 34a ... the little structure of the friction coefficient on surface, thus paper P second strengthen roller 34b ... than first strengthen roller 34a ... become easy slip.Thus, because second strengthen roller 34b ... to the carrying capacity of paper P become than first strengthen roller 34a ... little to the carrying capacity of paper P, so correspondingly can make by reinforcement roller 34 ... ((34a ...), (34b ... )) with the second distributing roller 32 ... the difference of operational throughput of the difference of circumferential velocity unit time of causing average paper P diminish.
In addition, in the first and second embodiments, by strengthen roller 34 ... ((34a ...), (34b ... )) and the second distributing roller 32 ... at axis direction X Shang Yi center be reference symmetry arrange, thus can to paper P with center be reference symmetry give carrying capacity.Thus, can prevent from wandering off the generation of (skew).
In addition, in the first and second embodiments, by make reinforcement roller 34 ... in axis direction X on central portion be the first reinforcement roller 34a ... both ends be the second reinforcement roller 34b ..., thus the conveying of stable paper P can be realized while suppress the bad generation relevant to the fluctuating of paper P by the central portion on axis direction X.
In addition, in the first and second embodiments, by make reinforcement roller 34 ... in the reinforcement roller that decentering position β is nearest on axis direction X be the first reinforcement roller 34a ... thus carrying capacity can be given near the β of center, even if when use be called the paper P of the sizes of A3 to A6, B4 and B5, also can the paper P of size that positively delivery ratio upperlimit is little.
In addition, in the first and second embodiments, by make reinforcement roller 34 ... in decentering position β on axis direction X nearest reinforcement roller 34a ... for the structure of the paper P of the minimum size that can use in image processing system 100 can be carried, thus in the structure of carrying at the sheet material of center reference, even the paper P of minimum size, the paper P of minimum size also positively can be carried.
In addition, in the first and second embodiments, by reinforcement roller department of assembly 32b be provided with strengthen roller 34 ... thus with reinforcement roller 34 ... from the second distributing roller 32 ... the situation that axis direction X leaves (such as, adjacent second distributing roller 32 ... between centre be arranged at the situation of driven roll shaft 32a) compare, even if the peak swing of the fluctuating of paper P is identical, also can make relative to reinforcement roller roller 34 ... diameter and the second distributing roller 32 ... the amplitude scale of difference of diameter become large, correspondingly can material cost be suppressed lower.And then, can by reinforcement roller 34 ... with the second distributing roller 32 ... make a combiner, can realize strengthen roller 34 ... with the second distributing roller 32 ... the shortening of assembling procedure.
In addition, although in the present embodiment, bending transport path (in this case forming the upset transport path 77 of bending transport path) is arranged on the place that opposite side Y2 paper P being transported to throughput direction Y carries out going back to, but even if the place being arranged on side Y1 paper P being transported to throughput direction Y also can similarly be avoided relevant to the fluctuating of paper P bad.In addition, although sheet material conveyor 30 is arranged on the place to forming the paper P of image and carrying, also can similarly avoid rising and falling to original copy relevant bad even if be arranged on place that the original copy that is read image carries.
(embodiment)
Then, because investigated the generation of the abnormal sound in upset transport path 77 about the embodiment of the structure for the first embodiment, so to coexist following being described with comparative example 1,2 one.
At this, in comparative example 1, in the image processing system 100 shown in Fig. 1, make each strengthen roller 34 ... whole be with the second distributing roller 32 ... carry out the structure rotated integrally.In addition, in comparative example 2, in the image processing system 100 shown in Fig. 1, make each strengthen roller 34 ... whole be relative to the second distributing roller 32 ... rotate about the axis structure freely.
Fig. 6 be illustrate according to the destination of image processing system 100 different reinforcement roller 34 ... position relationship and the table of size of external diameter.
As shown in Figure 6, Japan (centimetre) standard and the U.S.'s (inch) standard in, make reinforcement roller 34 ... outside diameter d 1 ~ d4 be all 20mm.In addition, in European standard (centimetre) standard, outside diameter d 2, the d3 of two reinforcement rollers 34,34 inside making are 21mm, and outside diameter d 1, the d4 of two reinforcement rollers 34,34 outside making are 20mm.In addition, any one the second distributing roller 32 ... outside diameter d is all made to be 15mm.
The result of comparative example 1,2 and embodiment is shown in Fig. 7.In the figure 7, the situation making generation abnormal sound is "×", makes the situation not producing abnormal sound be "○".In addition, the situation making generation rear end residual is "×", makes the situation not producing rear end residual be "○".This situation is also identical to Fig. 8 described later.In addition, " locking " in Fig. 7 means makes the second distributing roller 32 and reinforcement roller 34 carry out the structure rotated integrally, and " freedom " means makes reinforcement roller 34 rotate structure freely relative to the second distributing roller 32.
As shown in Figure 7, although when as comparative example 1 to each reinforcement roller 34 ... be all paired paper P when giving the structure of carrying capacity, rear end can be eliminated and remain, but can produce and be transported to the abnormal sound that the paper P in path 77 is sent in upset.On the other hand, although as comparative example 2 to each strengthen roller 34 ... all make when not giving the structure of carrying capacity to paper P, can eliminate and be transported to the abnormal sound that the paper P in path 77 is sent in upset, but because reduce the carrying capacity of paper P, so the rear end that can produce paper P remains, the stackability of paper P can not be guaranteed.
Consider this point, if as embodiment to each strengthen roller 34 ... a part make structure paper P not being given to carrying capacity, just can eliminate and be transported to the abnormal sound that the paper P in path 77 is sent in upset, and also can eliminate the generation that the rear end of paper P is residual, the stackability of paper P can be guaranteed.
In addition, because investigated the generation of the different abnormal sound in upset transport path 77 of the kind according to paper P in comparative example 1 and embodiment, so the results are shown in Fig. 8.
In the comparative example shown in Fig. 8 (a), with at B4 size/legal(8.5x14 inch) (LGL) size, A3 size/doubleletter(11 × 17 inch) compared with abnormal sound is multiple in (WLT) size situation, in the embodiment shown in Fig. 8 (b), the generation of all no abnormal sound of which size.
The present invention when not departing from its spirit or main feature, can implement with other various forms.Thus, above-mentioned embodiment, embodiment are only only illustrate in all, should restrictively not make an explanation.Scope of the present invention is illustrated by claims, does not restrain by any of specification sheets text.And then belonging to the distortion of the equivalency range of claims, changing is all in scope of the present invention.
In addition, this application claims based on the preceence of on August 6th, 2010 in No. 2010-177576, the Japanese Patent Application of Japanese publication.By mentioning at this, thus its content is programmed in the application.In addition, passed through to mention at this by the document that this specification sheets is quoted, thus it is all enrolled particularly.
Description of reference numerals
30: sheet material conveyor, 31: first discharge roller, 31a: drive roller shaft, 32: the second distributing rollers, 32a: driven roll shaft, 32b: strengthen roller department of assembly (the one-sided end of the second distributing roller), 34: strengthen roller, 34a: the first strengthens roller, 34b: the second strengthens roller, 342b: superficial layer, 77: upset transport path (example of bending transport path), 100: image processing system, F: sticker, P: paper (example of sheet material), X: axis direction, Y: throughput direction, Y1: the side of throughput direction, Y2: the opposite side of throughput direction, α: rear end residual fraction, β: center.

Claims (17)

1. a sheet material conveyor, is characterized in that, possesses:
Multiple first conveying roller, is disposed in coaxially;
Multiple second conveying roller, be disposed in opposite to each other with the plurality of first conveying roller respectively coaxial on, and clamp sheet material and carry between described first conveying roller rotated; And
Strengthen roller, with the either one or both of described first and second conveying rollers be disposed in coaxial on, and there is larger diameter,
Described reinforcement roller comprises to be made first of the structure rotated integratedly relative to the conveying roller on coaxial and strengthens roller and make rotating second of structure freely relative to the conveying roller on coaxial and strengthening roller.
2. sheet material conveyor according to claim 1, is characterized in that,
Described reinforcement roller and with the conveying roller of this reinforcement roller on coaxial at the axis direction Shang Yi center of this conveying roller be reference symmetry arrange.
3. sheet material conveyor according to claim 2, is characterized in that,
Make the central portion on described axis direction in described reinforcement roller be described first reinforcement roller, make both ends be described second reinforcement roller.
4. sheet material conveyor according to claim 3, is characterized in that,
The nearest reinforcement roller in the decentering position on described axis direction in described reinforcement roller is made to be described first reinforcement roller.
5. sheet material conveyor according to claim 3, is characterized in that,
The nearest reinforcement roller in the decentering position on described axis direction in described reinforcement roller is made to be the structure of the sheet material carrying the minimum size that can use in the image processing system possessing this sheet material conveyor.
6. sheet material conveyor according to claim 1, is characterized in that,
Described reinforcement roller relative to the conveying roller of this reinforcement roller on coaxial, be arranged on the one-sided end on the axis direction of this conveying roller.
7. an image processing system, is characterized in that, possesses:
Claim 1 to claim 6 any one described in sheet material conveyor; And
Bending transport path bending on the throughput direction of sheet material,
The structure from described sheet material conveyor towards described bending transport path feeding sheets made by described image processing system.
8. a sheet material conveyor, is characterized in that, possesses:
Multiple first conveying roller, is disposed in coaxially;
Multiple second conveying roller, be disposed in opposite to each other with the plurality of first conveying roller respectively coaxial on, and clamp sheet material and carry between described first conveying roller rotated; And
Strengthen roller, be disposed on the axle identical with the axle of at least one conveying roller in described first and second conveying rollers,
Described reinforcement roller comprises: first strengthens roller, gives carrying capacity to sheet material, and diameter is greater than the described conveying roller with this reinforcement roller on coaxial; And second strengthens roller, than described first, the carrying capacity of roller to sheet material is strengthened to the carrying capacity of sheet material little, and diameter is greater than the described conveying roller with this reinforcement roller on coaxial,
It is same footpath that described first and second reinforcement rollers all make external diameter.
9. sheet material conveyor according to claim 8, is characterized in that,
Making described first to strengthen roller is first strengthens the structure that roller rotates integratedly at the conveying roller on coaxial relative to this, makes described second reinforcement roller be second strengthen roller relative to this and rotate structure freely at the conveying roller on coaxial.
10. an image processing system, is characterized in that, possesses:
Claim 8 or sheet material conveyor according to claim 9; And
Bending transport path bending on the throughput direction of sheet material,
The structure from described sheet material conveyor towards described bending transport path feeding sheets made by described image processing system.
11. 1 kinds of sheet material conveyors, is characterized in that possessing:
Multiple first conveying roller, is disposed in coaxially;
Multiple second conveying roller, be disposed in opposite to each other with the plurality of first conveying roller respectively coaxial on, and clamp sheet material and carry between described first conveying roller rotated; And
Strengthen roller, with the either one or both of described first and second conveying rollers be disposed in coaxial on, and there is larger diameter,
Described reinforcement roller comprises: first strengthens roller, gives carrying capacity to sheet material; And second strengthens roller, than described first, the carrying capacity of roller to sheet material is strengthened to the carrying capacity of sheet material little,
Make described first to strengthen roller and described second to strengthen roller and be: first and second strengthens roller relative to this and rotate integratedly at the conveying roller on coaxial, and the structure making the friction coefficient on the surface of this second reinforcement roller less than the friction coefficient on the surface of this first reinforcement roller.
12. sheet material conveyors according to claim 11, is characterized in that,
Described reinforcement roller and with the conveying roller of this reinforcement roller on coaxial at this conveying roller axis direction Shang Yi center be reference symmetry arrange.
13. sheet material conveyors according to claim 12, is characterized in that,
The central portion on the described axis direction in described reinforcement roller is made to be that described first strengthens roller, both ends are described second reinforcement roller.
14. sheet material conveyors according to claim 13, is characterized in that,
The nearest reinforcement roller in the decentering position on described axis direction in described reinforcement roller is made to be described first reinforcement roller.
15. sheet material conveyors according to claim 13, is characterized in that,
The nearest reinforcement roller in the decentering position on described axis direction in described reinforcement roller is made to be the structure of the sheet material carrying the minimum size that can use in the image processing system possessing this sheet material conveyor.
16. sheet material conveyors according to claim 11, is characterized in that,
Described reinforcement roller relative to the conveying roller of this reinforcement roller on coaxial, be arranged on the one-sided end on the axis direction of this conveying roller.
17. 1 kinds of image processing systems, is characterized in that possessing:
Claim 11 to claim 16 any one described in sheet material conveyor; And
Bending transport path bending on the throughput direction of sheet material,
The structure from described sheet material conveyor towards described bending transport path feeding sheets made by described image processing system.
CN201180038780.3A 2010-08-06 2011-07-14 Sheet material conveyor and the image processing system possessing this sheet material conveyor Active CN103025636B (en)

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US20130187334A1 (en) 2013-07-25

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